P3 Gauge – BMW 2 / 3 / 4 Series G2X / G8X / G42

P3 OBD2 Vent Multi-Gauge – BMW 2 / 3 / 4 Series G2X / G8X / G42

Custom built multi-function digital boost gauge and more for the G20, G21, G22, G23, G26, G42, G80, and G82 generation (2019-2024) BMW 2 Series, 3 Series, and 4 Series, including 218i, 220i, M240i, 318i, 320i, 330i, M340i, M3, 420i, 430i, M440i, and M4 models.

Form and Function

Every P3 Gauge is built specifically for your vehicle. It fits perfectly—like it was born there.

Stealthy. Stylish. Smart.

In one sleek display, you get real-time access to everything that matters—boost, engine temperatures, performance timers, diagnostics, and more. All data is delivered via the included OBD2 diagnostic port connection, with optional add-on sensors available for advanced monitoring.

It’s easy to install, simple to use, and made to last.

Each unit is built to order, hand-assembled, and developed entirely in-house—not by a huge corporation, but by a small team who loves cars as much as you do.

Gauge Modes & Readings

The P3 Gauge is designed to read the most important data from your specific BMW platform for true plug-and-play installation. With a single OBD port connection, you’ll be up and running in minutes.

Advanced users can also utilise analog inputs or run the gauge in analog-only mode if OBD data is not required.

OBD Port Data (CANbus Input):

• Boost Pressure

• Coolant Temperature

• Engine Oil Temperature

• Air/Fuel Ratio (AFR or Lambda)

• Vehicle Speed (Calibrated or Raw)

• Intake Air Temperature

• Throttle Angle

• Ignition Timing

• Engine RPM (with shift light)

• Exhaust Gas Temperature (EGT)

• Battery Voltage

• Acceleration Timers (0–60, 0–100, 60–130)

• Braking Timers (60–0, 100–0)

• Read and Clear Diagnostic Trouble Codes (DTCs)

Optional Analog Inputs

Optional but powerful. The analog inputs on the P3 Gauge allow up to three additional sensors for expanded data monitoring, plus a fourth input for automatic display dimming.

Analog Boost Input
Use the optional P3 Analog Boost Sensor to monitor up to 80 PSI, ideal for tuned and high-boost applications.

2× Universal 0–5V Inputs
Two configurable 0–5V analog inputs allow near-limitless customization for additional sensors.

Dimmer Voltage Detection Input
Configure the gauge to d.On.A mode—any signal over 1 volt triggers automatic dimming, making integration with factory interior lighting simple.

Vehicle Fitment